After the Financial Holding Company Act was stipulated, the financial holding companies were established more and more. Because the scale of the financial holding company is more enormous, the influence of the financial holding companies is more powerful. Therefore, the functions of regulation and control for the financial holding company would be strengthened, but it couldn’t endanger the 3C operational synergy(capital efficiency, cross sales and cost down)of the financial holding company. Although the "transactions other than credit extension" as provided in the Article 45 of the Financial Holding Company Act is necessary to be stipulated, the situation of the financial holding company should be emphasized. In the event that the operation of the financial holding company has become difficult, the Article 45 of the Financial Holding Company Act might be justified in order to satisfy the necessity to process the business. The author has some humble opinions in this paper and wishes the foregoing opinions would be the reference in the operation of the financial holding company and the modification of the Financial Holding Company Act.